Classification
000 - Computer science, information & general works
300 - Social sciences
330 - Economics
363 - Other social problems & services
333 - Economics of land & energy
7
320 - Political science
6
700 - The arts; fine & decorative arts
6
900 - History & geography
4
140 - Specific philosophical schools
3
600 - Technology
3
301 - Sociology & anthropology
2
340 - Law
2
380 - Commerce, communications & transportation
2
400 - Language
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
304 - Factors affecting social behavior
1
370 - Education
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
658 - General management
1
800 - Literature & rhetoric
1